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What amount did Jean earn from the commission on her sales

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What amount did Jean earn from the commission on her sales [#permalink] New post 18 Dec 2012, 05:28
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  15% (low)

Question Stats:

86% (01:55) correct 14% (00:59) wrong based on 118 sessions
What amount did Jean earn from the commission on her sales in the first half of 1988 ?

(1) In 1988 Jean's commission was 5 percent of the total amount of her sales.
(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.
[Reveal] Spoiler: OA
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Re: What amount did Jean earn from the commission on her sales [#permalink] New post 18 Dec 2012, 05:35
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What amount did Jean earn from the commission on her sales in the first half of 1988 ?

(1) In 1988 Jean's commission was 5 percent of the total amount of her sales. Nothing about the amount of Jean's sales. Not sufficient.

(2) The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half. If the average sales per month in the first half was x, then the total sales for the year was 6x+6(x+10,000). Not sufficient.

(1)+(2) Commission = 0.05*(6x+6(x+10,000)), we need the value of x to answer the question. Not sufficient.

Answer: E.
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Re: What amount did Jean earn from the commission on her sales   [#permalink] 18 Dec 2012, 05:35
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